How does Sticky work in single post templates

Hi everybody.
I am trying to create a template for single post
With a layout of 2 columns left and right (left 74% of the container, right 24% of the container). I want the left side to display the post content, the right side to display custom blocks such as input forms, advertising images, when the user scrolls to read the content on the left, the right side also scrolls, but when the user scrolls to read the content on the left, the right side also scrolls. If you run out of content, the right column will stop and be displayed there without scrolling.
I tried the Sticky feature in Bricks but maybe I don’t completely know how to use this feature. Can anyone give me detailed instructions on how to do it?
Would like to thank